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The California-Kepler Survey. VII. Precise Planet Radii Leveraging Gaia DR2 Reveal the Stellar Mass Dependence of the Planet Radius Gap

  • Authors: Benjamin J. Fulton, and Erik A. Petigura

2018 The Astronomical Journal 156 264.

  • Provider: AAS Journals

Caption: Figure 7.

Toy model demonstrating that the two populations of planets have intrinsic widths. Left: real planet detections with boxes demarking the boundaries defined for the population of large planets (﹩{R}_{p}﹩ = 2.0–4.0 ﹩{R}_{\oplus }﹩), small planets (﹩{R}_{p}﹩ = 0.7–1.5 ﹩{R}_{\oplus }﹩), and the gap between them (﹩{R}_{p}﹩ = 1.5–2.0 ﹩{R}_{\oplus }﹩). We find that the data is well-described by two populations with a 60% intrinsic spread in their radii (middle). Decreasing that width to 40% is a clear mismatch to the data (right). Our toy model is described in Section 4.3.

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